The PBS-1 silencer, designed for use with the AK-47 to reduce the noise when firing, was introduced in the 1960s, and was used mostly by Spetsnaz forces and the KGB. They were used by the Spetsnaz in the Soviet–Afghan War in the 1980s, requiring the use of the older AKM version of the AK-47, because the newer AK-74 did not have a silencer available.
The PBS-1 is a two-chambered silencer using baffles and a rubber wipe. It was designed for use in conjunction with subsonic rifle ammunition. The PBS-1 has been extensively tested by the United States Army Foreign Weapons Test Lab. The rubber wipe requires replacement after 20–25 rounds. With a rubber wipe in place the PBS-1 reliably reduces the sound of an AK-47 discharge by 15 dB.
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